<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>时间转换</title>
</head>
<body>
  <script>
    let second = +prompt('请输入秒数：')
    function getTime(t){
      if (t<=0){
        alert('请输入大于0的秒数')
        return
      }
     let h = parseInt(t /60 /60 %24)
     let m = parseInt(t /60 %60 )
     let s = parseInt(t %60)
      h = h < 10 ? '0' + h : h
      m = m < 10 ? '0' + m : m
      s = s < 10 ? '0' + s : s
      // console.log(h,m,s)
      return `转化后为：${h}小时${m}分钟${s}秒`    
    }
    let str = getTime(second)
    document.write(str)
  </script>
</body>
</html>